| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may have be at | 13 |
|
| 2 | may [vb infin] be at | 13 |
|
| 3 | may [verb] been at | 13 |
|
| 4 | may have be at | 13 |
|
| 5 | may [verb] be at | 13 |
|
